Which one of the following polymer is prepared by condensation polymerization?

(A) Dacron (B) Teflon

(C) Styrene (D) Rubber

Nitric acid, a very important industrial chemical, is made by dissolving the gas nitrogen dioxide (NO2) in water. Calculate the moles of gas produced in 2 L volume container, 747 torr and 50 ºC if the gas behaves as ideal:

I don't know where to start with this Which salt is produced by adding aqueous ammonia to aqueous sulphur dioxide until just alkaline? A NH4SO3 B NH4SO4 C (NH4) 2SO3 D (NH4) 2SO4

If a 30 kg child were running at a rate of 9.9 m/s, what is his KE?

A copper block (90°C) is placed in contact with a lead block (20°C), which is already in contact with an iron block (70°C). Which of the following will happen? A.

As the temperature of a liquid increases, its viscosity most likely? A. increases B. stays constant C. decreases

Water from lake changes to the gAs state in process of

A 5 m long vertical tube having cross sectional area of 200 cm^2 is completely filled with water at room temperature. Calculate the mass of water present in the tube. Density of water at room temperature is 1000 kg/m^2

Mr Smith is walking his dog. He walks for 5 minutes (300 seconds) at a speed of 1.5 m/s. His dog runs at a speed of 5 m/s for the same time. a How far does Mr Smith walk? b How far does the dog run?

Gasoline has a density of 0.749 g/mL. How many pounds does 19.2 gallons of gasoline weigh? Use significant figures. Do not enter "pounds" as part of your answer.

Which of these changes involved a physical change and not a chemical change?